WEEKNUM

Date/Time Functions:
Function: WEEKNUM() - Returns the week number of a specific date.
(E1): 1900-01-01
System 1 Week number is: 1
System 2 (ISO-8601) Week number is: 52
(E2): 1904-02-14
System 1 Week number is: 8
System 2 (ISO-8601) Week number is: 6
(E3): 1936-03-17
System 1 Week number is: 12
System 2 (ISO-8601) Week number is: 12
(E4): 1964-04-29
System 1 Week number is: 18
System 2 (ISO-8601) Week number is: 18
(E5): 1999-05-18
System 1 Week number is: 21
System 2 (ISO-8601) Week number is: 20
(E6): 2000-06-21
System 1 Week number is: 26
System 2 (ISO-8601) Week number is: 25
(E7): 2019-07-04
System 1 Week number is: 27
System 2 (ISO-8601) Week number is: 27
(E8): 2020-08-31
System 1 Week number is: 36
System 2 (ISO-8601) Week number is: 36
(E9): 1956-09-10
System 1 Week number is: 37
System 2 (ISO-8601) Week number is: 37
(E10): 2010-10-10
System 1 Week number is: 42
System 2 (ISO-8601) Week number is: 40
(E11): 1982-11-30
System 1 Week number is: 49
System 2 (ISO-8601) Week number is: 48
(E12): 1960-12-19
System 1 Week number is: 52
System 2 (ISO-8601) Week number is: 51
(E13): 2025-12-06
System 1 Week number is: 49
System 2 (ISO-8601) Week number is: 49